Études for Erlang

Solution 11-2

Here is a suggested solution for Étude 11-2. Since the bulk of the code is identical to the code in the previous étude, the only code shown here is the revised -export list and the added functions.

weather.erl

-export([report/1, recent/0]). % wrapper functions

%% Wrapper to hide internal details when getting a weather report
report(Station) ->
  gen_server:call(?SERVER, Station).

%% Wrapper to hide internal details when getting a list of recently used
%% stations.
recent() ->
  gen_server:cast(?SERVER, "").